SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) Warning: Permanently added '10.128.1.185' (ED25519) to the list of known hosts. 2026/05/15 10:51:31 parsed 1 programs [ 72.921510][ T5639] cgroup: Unknown subsys name 'net' [ 73.075911][ T5639] cgroup: Unknown subsys name 'cpuset' [ 73.084810][ T5639] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 74.422762][ T5639] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 77.011632][ T5645] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 77.531501][ T1109] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.542118][ T1109] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.586878][ T1109] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.595683][ T1109] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.558150][ T5701] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.566644][ T5701] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.574783][ T5701] bridge_slave_0: entered allmulticast mode [ 79.583244][ T5701] bridge_slave_0: entered promiscuous mode [ 79.593936][ T5701] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.601672][ T5701] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.609473][ T5701] bridge_slave_1: entered allmulticast mode [ 79.616717][ T5701] bridge_slave_1: entered promiscuous mode [ 79.646819][ T5701] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.658955][ T5701] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.686688][ T5701] team0: Port device team_slave_0 added [ 79.698879][ T5701] team0: Port device team_slave_1 added [ 79.728809][ T5701] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.736415][ T5701] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 79.762725][ T5701] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.776402][ T5701] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.783969][ T5701] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 79.810700][ T5701] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.849606][ T5701] hsr_slave_0: entered promiscuous mode [ 79.857877][ T5701] hsr_slave_1: entered promiscuous mode [ 79.990559][ T5701] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.004891][ T5701] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 80.013755][ T5701] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.024039][ T5701] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 80.033478][ T5701] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.042363][ T5701] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 80.050457][ T5701] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.061572][ T5701] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 80.091688][ T5701] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.100121][ T5701] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.108565][ T5701] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.116108][ T5701] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.172114][ T5701] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.191436][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.200736][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.219159][ T5701] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.231358][ T1109] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.239962][ T1109] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.254197][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.261485][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.554688][ T5701] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.603439][ T5701] veth0_vlan: entered promiscuous mode [ 80.615273][ T5701] veth1_vlan: entered promiscuous mode [ 80.646297][ T5701] veth0_macvtap: entered promiscuous mode [ 80.657142][ T5701] veth1_macvtap: entered promiscuous mode [ 80.676630][ T5701] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.691828][ T5701] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.709712][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.719548][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.729548][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.740267][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.875422][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.983174][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.084120][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.160106][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.617217][ T4947] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 81.627788][ T4947] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 81.636842][ T4947] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 81.652587][ T4947] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 81.663793][ T4947] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2026/05/15 10:51:43 executed programs: 0 [ 82.392695][ T4947] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 82.401210][ T4947] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 82.411582][ T4947] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 82.420296][ T4947] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 82.429130][ T4947] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 82.821517][ T5763] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.829029][ T5763] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.836547][ T5763] bridge_slave_0: entered allmulticast mode [ 82.844022][ T5763] bridge_slave_0: entered promiscuous mode [ 82.851803][ T5763] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.859610][ T5763] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.869354][ T5763] bridge_slave_1: entered allmulticast mode [ 82.876492][ T5763] bridge_slave_1: entered promiscuous mode [ 82.905388][ T5763] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.917534][ T5763] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 82.948735][ T5763] team0: Port device team_slave_0 added [ 82.957116][ T5763] team0: Port device team_slave_1 added [ 82.983438][ T5763] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 82.990541][ T5763] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 83.017181][ T5763] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.029522][ T5763] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.036905][ T5763] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 83.063528][ T5763] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.111112][ T5763] hsr_slave_0: entered promiscuous mode [ 83.117436][ T5763] hsr_slave_1: entered promiscuous mode [ 83.124048][ T5763] debugfs: 'hsr0' already exists in 'hsr' [ 83.129866][ T5763] Cannot create hsr debugfs directory [ 83.285932][ T12] bridge_slave_1: left allmulticast mode [ 83.291762][ T12] bridge_slave_1: left promiscuous mode [ 83.299567][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.310989][ T12] bridge_slave_0: left allmulticast mode [ 83.318558][ T12] bridge_slave_0: left promiscuous mode [ 83.324626][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.490202][ T12] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.501340][ T12] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.511258][ T12] bond0 (unregistering): Released all slaves [ 83.632090][ T12] hsr_slave_0: left promiscuous mode [ 83.639743][ T12] hsr_slave_1: left promiscuous mode [ 83.647192][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.657066][ T12] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.666679][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.674515][ T12] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.692870][ T12] veth1_macvtap: left promiscuous mode [ 83.699324][ T12] veth0_macvtap: left promiscuous mode [ 83.705751][ T12] veth1_vlan: left promiscuous mode [ 83.711403][ T12] veth0_vlan: left promiscuous mode [ 84.002848][ T12] team0 (unregistering): Port device team_slave_1 removed [ 84.021206][ T12] team0 (unregistering): Port device team_slave_0 removed [ 84.126480][ T5291] 8021q: adding VLAN 0 to HW filter on device eth1 [ 84.454573][ T50] Bluetooth: hci0: command tx timeout [ 84.495142][ T5763] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.509743][ T5763] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 84.524379][ T5763] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.536332][ T5763] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 84.544445][ T5763] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.556631][ T5763] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 84.564671][ T5763] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.578833][ T5763] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 84.896179][ T5763] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.981213][ T5763] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.068714][ T57] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.075957][ T57] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.104226][ T57] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.111457][ T57] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.627959][ T5763] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.692314][ T5763] veth0_vlan: entered promiscuous mode [ 85.711106][ T5763] veth1_vlan: entered promiscuous mode [ 85.754932][ T5763] veth0_macvtap: entered promiscuous mode [ 85.767478][ T5763] veth1_macvtap: entered promiscuous mode [ 85.792145][ T5763] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.814254][ T5763] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.837196][ T3374] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.855225][ T3374] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.865624][ T3374] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.881691][ T3374] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.934226][ T3374] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.943599][ T3374] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.969321][ T36] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.979450][ T36] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) syzkaller build log: go env (err=) AR='ar' CC='gcc' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_ENABLED='1' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' CXX='g++' GCCGO='gccgo' GO111MODULE='auto' GOAMD64='v1' GOARCH='amd64' GOAUTH='netrc' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOCACHEPROG='' GODEBUG='' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFIPS140='off' GOFLAGS='' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build277611866=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTELEMETRY='local' GOTELEMETRYDIR='/syzkaller/.config/go/telemetry' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.26.0' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at ef766cd7419 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"ef766cd7419cd6574f2bc8df4b866b93bc12bcb1\" /usr/bin/ld: /tmp/cc4FYtip.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking ./tools/check-syzos.sh 2>/dev/null